How do components communicate in React?

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In React, component communication is essential for building dynamic UIs. Components in React communicate in several ways, depending on their relationship (parent-child, siblings, or unrelated). Here's how they typically communicate:

1. Parent to Child (Props)

The most common communication is from parent to child using props. A parent component passes data or functions to a child as props.

2. Child to Parent (Callback Functions)

A child can communicate with its parent by invoking a callback function passed down through props.

3. Sibling Components (Via Common Parent)

Siblings communicate by lifting state up to their common parent, which manages the shared state.

4. Global State (Context API / State Libraries)

For larger apps, components that are not directly related can share state using React Context or external libraries like Redux, Zustand, or Recoil.

In summary, React provides flexible ways for component communication—via props, callbacks, state lifting, or context—depending on the component relationship and complexity of the app.

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